/*
 * chapter-layout.css — Shangazi Books
 * Shared "chapter viewer" chrome: top nav, book-cover sidebar, footer.
 * Borrowed from index.html so every chapter page matches the site shell.
 * Loaded alongside reader.css (which already sets :root colours, box-sizing,
 * body font, etc. — this file only adds the chrome + layout grid).
 */

:root {
  --accent:        #c0392b;
  --accent-hover:  #a93226;
  --nav-bg:        #1a1a1a;
  --nav-muted:     #9ca3af;
  --border:        #e5e7eb;
}

a { text-decoration: none; }

/* ── TOP NAV (same markup/classes as index.html) ── */
nav {
  background: var(--nav-bg);
  padding: 0 28px;
  height: 58px;
  display: flex;
  align-items: center;
  gap: 32px;
  position: sticky;
  top: 0;
  z-index: 200;
  font-family: 'Inter', system-ui, sans-serif;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  white-space: nowrap;
}

.nav-logo {
  width: 42px; height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'EB Garamond', serif;
  font-size: 1.1rem;
  color: #fff;
  font-weight: 400;
}
.nav-logo img { width: 100%; height: 100%; object-fit: contain; display: block; }
.nav-logo .logo-fallback { display: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--nav-muted);
  padding: 6px 12px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-link.active { color: #fff; background: rgba(255,255,255,0.12); }

.nav-right { display: flex; align-items: center; gap: 10px; margin-left: auto; }

.btn-nav-ghost {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--nav-muted);
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.15);
  background: none;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.btn-nav-ghost:hover { color: #fff; border-color: rgba(255,255,255,0.35); }

.btn-nav-primary {
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  padding: 7px 16px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-nav-primary:hover { background: var(--accent-hover); }

/* ── PAGE LAYOUT: sidebar + reader column ── */
.chapter-layout {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 216px 1fr;
  gap: 40px;
  align-items: start;
  padding: 0 28px;
}

.chapter-layout .chapter-intro {
  max-width: none;
  margin: 0;
  padding: 48px 0 80px;
}

/* ── SIDEBAR — book covers ── */
.chapter-sidebar {
  position: sticky;
  top: 86px;
  padding: 48px 0 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.sidebar-label {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  align-self: flex-start;
}

.sidebar-book {
  box-sizing: border-box;
  width: 216px;
  height: 288px;
  border-radius: 3px;
  box-shadow: 3px 4px 12px rgba(0,0,0,0.18), inset -1px 0 2px rgba(0,0,0,0.15);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8px 6px;
  font-family: 'EB Garamond', Georgia, serif;
  font-size: 1.05rem;
  line-height: 1.3;
  color: rgba(255,255,255,0.9);
  font-weight: 500;
  transition: transform 0.15s, box-shadow 0.15s;
}
.sidebar-book:hover { transform: translateY(-3px) scale(1.03); box-shadow: 3px 8px 18px rgba(0,0,0,0.25); }
.sidebar-book.featured { border: 2px solid var(--gold); }
.sidebar-book.coming-soon { opacity: 0.5; pointer-events: none; }

.sidebar-book-spine {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 12px;
  background: rgba(0,0,0,0.25);
}

/* book colour palettes — same gradients as index.html */
.bc-1 { background: linear-gradient(160deg,#1a1a2e,#0f3460); }
.bc-2 { background: linear-gradient(160deg,#2d1b4e,#6b35b0); }
.bc-3 { background: linear-gradient(160deg,#1b3a2d,#2e7d52); }
.bc-4 { background: linear-gradient(160deg,#3d1515,#9b2335); }
.bc-5 { background: linear-gradient(160deg,#1e2d3d,#2c5f8a); }
.bc-6 { background: linear-gradient(160deg,#2a1f0e,#8b5a2b); }
.bc-7 { background: linear-gradient(160deg,#1f2c1f,#4a7c59); }
.bc-8 { background: linear-gradient(160deg,#2d2d1a,#8b8b2b); }

/* ── FOOTER (same markup/classes as index.html) ── */
footer {
  background: var(--nav-bg);
  padding: 36px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-family: 'Inter', system-ui, sans-serif;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 0.8rem;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-links a {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
  transition: color 0.15s;
}
.footer-links a:hover { color: rgba(255,255,255,0.7); }

/* ── RESPONSIVE — sidebar moves above the reader on narrow screens ── */
@media (max-width: 860px) {
  .chapter-layout {
    grid-template-columns: 1fr;
  }
  .chapter-sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    padding: 28px 0 0;
  }
  .sidebar-label { display: none; }
  .sidebar-book { width: 96px; height: 128px; font-size: 0.5rem; }
}

@media (max-width: 600px) {
  .nav-links { display: none; }
}